As the international association of the world's airports, ACI is a non-profit organization, the prime purpose of which is to foster cooperation among its member airports and with other partners in world aviation, including governmental, airline and aircraft manufacturing organizations.

Airways International offers a comprehensive range of services that include strategic planning, corporatisation policy development and implementation, commercial management and planning, economic analysis and financial structuring related to the commercial provision of air navigation services.

Since 1922, The Aeronautics & Space Division of Bureau Veritas is a world reference in risk prevention, safety and aerospace quality. It collaborates with more than 40 civil aviation authorities and over 20 airlines, as well as with many aeronautics and spatial industrialists throughout the world. It publishes the International Register of Civil Aircraft, IRCA, in cooperation with the ICAO and in association with the British and Italian authorities.

CPG Consultants Pte Ltd is Singapore's most experienced airport planning and multidisciplinary practice, with more than 160 years of history developing infrastructure and public works for Singapore. Their dedicated Airport Development Division has over 30 years of expertise in airport project and construction management, planning and programming, engineering, architectural design, interior architecture, geo-technical and civil engineering, and pre and post-construction services.

Designs software for flight instrument procedures allowing the elaboration of departure and arrival itineraries at airports. Infolution has recently developed, in collaboration with ICAO, PANS-OPS Software, based on ICAO standards and technical publications.

Offers global information technology services in aviation as well as other sectors.